TWI270503B - Automatic gear-changing device for bicycle - Google Patents

Abstract

An automatic gear-changing device for bicycle includes an umbrella-shaped gear provided in an inner wheel hub of a rear wheel of a bicycle, a rear derailleur, and a derailleur operating apparatus connected to the umbrella-shaped gear and passing through a connection rod and connecting to the rear derailleur for performing gear changing. The derailleur operating apparatus includes a shells body, a top worm and a bottom worm are rotationally provided on the top end and the bottom end of the shell body and the top and bottom worms have left-rotating screw tooth and parallel to each other, an input transmission mechanism for allowing the top and bottom worms rapidly rotate in the same direction, a clutching mechanism for allowing a gear stand mechanism rotate around a supporting shaft with respect to the rotation speed of the top worm and drive a worm gear thereon to respectively engage with the top and the bottom worms, and passing through an output transmission mechanism for allowing a stroke stand mechanism moves in left-right direction, then passing through a dual-pivot resilient member for allowing the rear derailleur changes gear with the connection rod. The automatic gear-changing device for bicycle allows a user rides the bicycle without needs of changing gears by hands, and the gear will be automatically changed according to the speed.

Description

1270503

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed changer and a rear derailleur actuator. [Prior Art] A bicycle having a shifting function , is it in the frame? The rear sprocket of the rear sill and the rear derailleur. When the cyclist wants to shift gears, the manual shifting operation unit mounted on the handlebar is used to pull the rear chain to brake the tension sprocket so that the chain originally engaged on one of the rear sprocket moves to the The other rear sprocket changes the gear position. Figure 10 shows a typical prior art derailleur 1 〇 〇. The rear chain crying includes a base member 101 mounted on the bicycle frame F; a movable member 103 supporting the guide key sigma 102, which then rotatably supports a guide sprocket 104 and a tight chain The wheel 1〇5; and the connecting rod 11〇 rotatably connected between the base member 1〇1 and the movable member 1〇3 by the reversing pins 1〇6, 1〇7, 1〇8, 1 0 9 . A sheath 113 of a control cable 112 is fixed to the base member 101 and its inner core U4 is coupled to the link 110. Pulling and releasing the inner core 1 1 4 causes the movable member 丨〇3 to move relative to the member 1 0 1 , and the movable member 1 〇 3 then causes the chain guide 1 〇 2 to be under the action of the resetting force of the spring, 13⁄4 The mode guides a chain c to a selected position below a set of key G1 - G7. Therefore, in the prior art, when the shifting of the bicycle is to be performed, the rider has to constantly operate the shift operating unit by hand to, for example, pull the control cable to change the chain to the smaller sprocket for the standard shift to the acceleration gear.彳立元 or release

Page 5 1270503 ‘V. Description of invention (2) Controlling the chain to change to a larger sprocket Manual operation is very inconvenient, no; ϊ = shift to deceleration broadcast. In this way, according to the present invention, it is included in the operation of the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The moving output member speed operation loading member is connected to the bottom wall, and the right side wall and the right side end thereof have a worm having a rear wheel on the housing to rotate; a right end portion of the rod is used for The rear wheel will be. Ming, mention a coaxial: a rear, and, and the operation of the left side wall shell between the left side of the left side of the rounded rod, the left side of the left hub of the flywheel off the two in the fly to provide a self-speed change A bicycle is fixedly mounted on a self-dial chain; a suitable connection with the bicycle; the shifting operation, a right side wall, a middle upper end position, an upper worm, a left side thereof; and a mounting on the shell wall and the middle wall Between the spiral turns; the # on the turning wheel out from the input direction viewing mechanism, with the left side of the fly on the side of the left side of the left and right sliding automatic shifter, which can be automatically shifted after the automatic shifter automatic shifter The inner wheel rod and the rear dialing device mounted on the rear wheel of the rear wheel of the driving vehicle include: a wall and a rotative support with the middle wall, wherein the creeping portion has a left body sin lower end position and a worm parallel to the transmission mechanism, The clockwise transmission has a pair of oscillating clockwise, a slidable sleeve on the upper side, and a characteristic end of the inner chain on the upper frame of the car frame to connect a casing, the top of the integrated top casing The spiral helix and the rotatable lower worm 13⁄4 are used to mount the worm in the same direction on the right side of the amp

1270503 'V. Description of invention (3) The cable connecting the two flying and sliding sleeves 'Flying' is opened outwards under the centrifugal force generated by the high speed rotation of the upper worm, and the sliding sleeve is pulled by the cable. Production side, a carrier mechanism having an inverted double L-shaped bracket, each of which has a pivot hole at each of the corners of the bracket, which can be placed around a bottom of the housing and a top plate The support shafts in the middle of the upper and lower worms are oscillated, and each end of the lower arm of the ledge is provided with a wheel axle mounting hole, and a fixing hole is provided between the mounting hole of the front L-shaped bracket and the pivot hole. The end of the upper arm of each L-shaped bracket is provided with a semi-circular end 1 bead which is abutted against the right side of the sliding sleeve of the flying gyro clutch mechanism, and the sliding sleeve is fixed. Master's • The moving end allows the double L-shaped bracket to swing, and the 70 support shaft swings clockwise. When the stop is pushed, the double L-shaped bracket swings in the counterclockwise direction of the tension spring. The carrier mechanism also has a travel limit piece which can be integrated with the double L-shaped support hole, and has four sides on each side of the opening. 5. Lumber, connected to an edge; an output transmission having a bevel gear and a spur gear rotatably mounted on the support = upper coaxial fixed connection, a rotatable, umbrella-shaped on the middle wall of the housing a gear, which is coupled to the umbrella meter I 2 on the support shaft, and a right 'two' of the bevel gear connected to the wall of the casing: the other end of the screw is supported on the right side wall, and糸 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' The spur gear meshes with the spur gear on the support shaft. In the spring clothes hole, the worm wheel meshes with the upper worm when the volute is oscillated in the light needle direction, and the L-shaped bracket pushes in the direction of the side of the support shaft. The worm wheel presses ^, the worm wheel rotates along the tangential line. When the double L-shaped bracket swings in the counterclockwise direction, the worm wheel invites: the needle direction rotates ' /, the lower worm meshes, the bit ^ 1270503 ~ five, the invention description (4) point the worm wheel in the clockwise direction Rotating the wheel axle on the side of the worm wheel can be rotated adjacent to 'and live by one, in the small bulge The teeth between the rods can be left-handed in the housing, and the front end is connected to the left side of the lower end of the lower end of the opening mechanism of the lower end of the fork. And the bottom plate rotatable derailleur can include a small left end of the umbrella; the double- and right-moving lower end of the action-inwardly rotates the toothed gear described

The 8th line is changed in the direction of one side of the support shaft; the side of the worm wheel is provided with a small tenon so that the worm wheel is in the reverse-arc-shaped groove, and the inside of the groove is between the two ends of the groove. Rod, its whirling in the worm m ^ head and the outer mesh of the worm wheel = the circumferential surface of the spring steel on the front L-shaped bracket: under the movement, the rotating head can be rotated to the stalk and the splicing point is separated to separate the two; Stroke frame mechanism; and the right I right moving frame body, the upper end of the frame body, and /, the frame body can be swingably mounted with a ^ / / with the screw rod to the end of the 舆 gear frame mechanism of the stretched bomb The other two pieces of i have a slanting direction of the gradual direction, and the bottom wall of the casing: ϊ ^ and the upper and lower swaying of the frame to adjust the tension of the bombing body to the side of the frame with a small bearing, to go 浐f left or right position, small bearings can be in line; limit two ί:=;! dynamic contact... fixedly connected to the strut fulcrum elastic part, which has a bottom plate, set at the bottom two fulcrums, one card is placed a slanting point on the fulcrum about the two points - a sub-shaped sliding piece, and a tension spring connected between the fulcrum points of the top end of the sliding piece, the sliding Said pivot connection to the top end of the connecting rod, the other end of the connecting rod is connected. 〃 In the automatic shifting device of the brake, preferably the rotating output member rim, the input transmission mechanism comprises a connecting rod connected to the upper end, a pinion gear connected to the left end of the lower worm, a setting five, the invention description ( 5) The M AA & ^ μ of the two pinions and the intermediate gear that meshes with them, and the bevel gear that is fixedly connected with the middle two: : ^ The umbrella-shaped sauce wheel fixedly mounted on the rear sprocket of the vehicle is coupled. In the bicycle automatic shifter of the seven-line red f, it is preferable that when the double L-shaped yoke is swung clockwise, the upper worm and the high-speed rotating upper worm are smashed; - a low angle in the direction f Γ θ1 ^ set ^ L ^ ” up and down, keep a certain door between the crests of the worm

The distance is 1 j force transmission wheel; the #μ-shaped bracket rotates counterclockwise around the support shaft L ·: reverse: ϊ is meshed with the lower worm rotating at the south speed to make the output transmission: set as the low-speed rotation output in the opposite direction. In the bicycle automatic shifter, it is preferable to say that the flat strip is inserted at the end of the flat strip. The other side of the X-strip is rotatably supported on the worm shaft. In the bicycle automatic shifter described above, it is preferable that the distance between the ends can be changed to increase or decrease the reverse stroke to eliminate each of the [f-shaped groove gaps. -合,空空空空> = In the above bicycle automatic shifter, it is preferable that the position of the right oblique side is set - the limit element elasticity = when the enemy piece is placed, because the swing lever is right shifted Arrival minimum = swing, so that the worm wheel and the lower worm separate the double 1-shaped bracket from the hour-hour equation and continue to move right. % needle direction swing, stop - 1270503 V. Invention description (β) In the above bicycle automatic drag σ 〇 架 片 与 与 与 与 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : When you turn more about W circle, position. , the connection point of the open y wood chip is stopped at the same time as the forward rotation mode. FIG. 1 and FIG. 2 show that the present invention/one device 2 and the rear derailleur 3 are configured to be shifted from the changer 1 Operation § is connected to the inner wheel valley η of the rear wheel W as the second: the 2:=:: bevel gear 4' shown in the figure S followed by the wheel W-starting. The shift operating device 2 is fixed to the bicycle 2: = upper-input-powered umbrella-shaped tooth _ (described later), the second gear, and the +-shaped gear 4 are engaged. The rear derailleur 3 is equipped with a part. The rear derailleur 3 can be removed by a lower reset magazine of the 浐诵田知作衣. No other: pass/Λ rear derailleur, the corpse is set to - Arabic numerals 7" 々, connecting rod 110 near turn pin 1 07 at the position of the rafter/push-pull rod 5 a, which is pivotally connected by a remote joint soil (four) = double-point elastic member 9 () (hereinafter described) of the operating device 2 By the connecting rod 5, the movable member of the rear derailleur 3 can be moved in a specific direction with respect to the base member, and the chain #c is transposed to the lower side of the other sprocket to perform a shifting operation. 3 to 5 are respectively a perspective view, an exploded perspective view and an assembly schematic of the shift operating device 2 of the bicycle automatic shifter. The housing 14 has a bottom wall 15 , a left side wall 16 , a right side wall 17 and a middle wall 18 . On the left and right page 10 You have fixed a slider 1 9 between 1 and 16. j ij璧i is located in the upper end position of the housing 14 (relative to the position when the shift operating device is installed and used), in the support hole 16 a of the left side wall 16 and the leather receiving hole l7a of the right side wall An upper worm 21 is rotatably mounted, and a portion between the cymbals 18 in the left side wall 16 is provided with a left-handed helical tooth, and an end of the upper worm 21 extending left and the first cymbal 16 has a pinion 22. A lower worm 24 parallel to the upper worm 21 is rotatably mounted on the support hole 16b of the left side cymbal 16 and the support hole 18a of the middle wall 18 at the lower end of the casing 14, and the lower worm 24 is provided with a left The end of the lower worm 24 extending from the left side wall 16 is also provided with a small ^ 2 5 . An intermediate gear 2 is interposed between the pinion gears 2 2 and 2 5 . The intermediate gear g26 is coaxially fixedly coupled with a bevel gear 11 . The pinion 22 , the middle wheel 26 , the pinion 25 and the bevel gear 11 form an input. Transmission mechanism 27. As described in the figure, when the shift operating device 2 is mounted on the frame F, the bevel gear 11 is engaged with the bevel gear 4 on the rear wheel W, so that when the rear wheel w is in the drawing of FIG. When it is rotated clockwise, the upper worm 21 and the lower mast 24 can be driven to rotate at a high speed in the same direction (clockwise as viewed from the left direction in Fig. 3). 3 to 6 show the flying gyro clutch mechanism 3 in the shift operating device 2. The flying gyro clutch mechanism 30 includes a pair of flying turrets 32 swingably mounted on both sides of the right end portion between the middle 8 and the right side wall 17 of the upper mast 21, one of which can be on the upper mast The sliding rod 33' of the right end of the round rod portion of the right end of the flying rod 3 2 is slid on the left side of the flying turret 3 2 and the two pulling wires 3 4 respectively connecting the two flying gyro 32 and the sliding sleeve 33. , the flying turret 3 2 is pulled by the centrifugal force to pull the sliding sleeve 3 3 to the right by the pulling wire 3 4 , as shown by the dotted line in Fig. 6

1270503 'V. Description of the invention (8) Position change to solid line position Figs. 3 to 6 also show the carrier mechanism 4'. The carrier mechanism 4 includes an inverted double L-shaped bracket 41, and each of the L-shaped brackets is provided with a pivot hole 42 at a corner thereof, which can be disposed around the bottom wall 15 of the housing 14 The support shaft 43 between the worms 21, 24 is swung, and the support shaft 43 is fixed at both ends to the top plate 45 which is integral with the middle wall 18, respectively. A mounting hole 49 for fixing the worm shaft 48 is provided at the end of each L-shaped bracket 41 which is 47. A hole 52 for fixing one end of a tension spring 51 is provided between the mounting hole 49 of the front L-shaped bracket 41 and the pivot hole 42, and the other end of the spring 51 is fixed to the stroke frame (described later). At the end of the upper arm 54 of each L-shaped bracket 41, it abuts against the flying cone clutch mechanism 3. The right side face of the sliding sleeve 33 is rightly sliding. The 'pushing end 55 allows the double L-shaped bracket 41 to swing clockwise around the support*. When the sliding sleeve 33 stops pushing the end 55, the elastic end 51 is stretched. Under the action of pulling force, the counterclockwise pendulum = wheel machine can also include an integral connection with the double L-shaped bracket 41. The stroke limiting piece 57 has a rectangular parallelepiped shape with an upward opening. There are about 45 on each side of the opening π. ❾Left oblique side 58 and right oblique=9 4 When the stroke frame mechanism 80 moves left and right, the small shaft paste on it (back = left oblique side 58 or right oblique side 59 slips, can make double [shaped bracket 41 around support ^ 3 swinging. An output transmission mechanism 6 is also shown in Figures 3 to 6. The wheel drive mechanism (3) is mounted on the support shaft 43 with a bevel gear 61 and a wheel 62. 61 is coaxially fixedly coupled to the spur gear 62; a bevel gear 64 movably supported in the middle wall 8 of the housing 14, the bevel gear

1270503: V. Description of the invention (9) 6 4 is sprayed with the umbrella # wheel 1 1; the right end of the umbrella window wheel 6 4 is connected with a screw 6 5 , and the other end of the screw 6 5 is supported on the right side of the housing 14 In the support hole 17b of the wall 177, the lead screw 65 can be engaged with the stroke frame mechanism 80, which will be described later, to move the stroke frame mechanism 8'' to the left and right. The output transmission mechanism 60 further includes a worm gear 68 rotatably mounted on the worm shaft 48 and a spur gear coaxially fixedly coupled to the yoke 68, a 5 yoke wheel 69 and a spur gear 62 on the support shaft 43. Keep fit. The insects are also fixed to the two mounting holes 49 of the lower arm 47 of the double L-shaped bracket 41. Since the double L-shaped bracket 41 is swingable about the support shaft 43, the worm gear 68 can also be swung around the support shaft 43. When the double L-shaped bracket 41 is not oscillated, the periphery of the top of the worm wheel 68 is kept at a certain distance from the tip of the upper and lower amps 21, 24, for example, about 1 mm. Thus, when the double L-shaped bracket 4 1 is swung in the clockwise direction, the wheel 68 can be quickly meshed with the upper worm 21, and the meshing point pushes the worm wheel in a direction perpendicular to the side of the support shaft, in the upper worm 2丨The left-handed helical teeth rotate the blade 68 in a clockwise direction, and the transmission of the spur gear 69, the spur gear, the bevel gear 61 and the bevel gear 64 causes the screw 65 to press: 芈2 in FIG. Similarly, when the red shape is swung in the direction of ^, the worm wheel 68 can be quickly meshed with the lower worm 24, and the worm wheel is pushed along the tangential direction toward the side of the support shaft, and is driven by the lower spiral j 1 The worm wheel 68 is rotated in the counterclockwise direction. The function of the transmission mechanism 60 is such that the linear motion of the wheel drive mechanism 2 from the L 奂 to the frame mechanism 8 〇 (described later): Figs. 4, 5 and As can be seen in Figure 7, the small boss 72 on the side 72 of the wheel 68 can be located on the side of the worm wheel 68 and has a threshold at both ends of the small groove groove. The private position between the two. On the worm shaft 48 can also be rotated — -

1270503 V. Inventive Description (ίο) The swing lever 74, the head 75 of the swing lever 74 is adjacent to the outer peripheral surface of the tooth tip of the worm wheel 68. Assuming that the worm wheel 6 8 嗜 is in harmony with the upper worm 2 1 and clockwise, the small stud 72 drives the revolving lever 74 to rotate, and when the yoke head 75 reaches the meshing point of the movement 68 and the upper worm 21, The worm wheel 68 and the upper worm are separated from the rear gyro 74 by the right side of the hour hand at 12 o'clock and the small stud 7 2 is placed. The left side of the arbor 74, at this time, if the bicycle accelerates, the flying worm wheel 68 is pulled up and the upper worm 2 is engaged, and the small stud 72 is rotated by the == rotating rod (four), so that the two are separated, and the gyro? 4 The direction is two to the right of the position and the small stud 72 is to the left of the revolving lever 74. At this time, if the needle _12 • deceleration, the worm wheel 68 meshes with the lower worm 24, and the small bulge 72 is reversed on the left side of the gyro 74, and will be rotated one turn due to the 丄· To the right side of the back crowbar 7/ ,, the revolving lever can be turned to the position of the instant needle 6 o'clock of the worm gear 68 under the worm wheel 68 to separate the two. Since the point of 'the meshing point is 180 degrees apart, the ";;, the worm and the worm are in harmony with the same-mast, and only need to rotate the upper or lower mast to separate and then separate, so as to offset the reverse rotation When the force is 1 1/3 circle), the shifting action will be smooth. In order to make the reverse shift more accurate 4:; the gap between the ends, the distance of the end can be added and subtracted reverse rotation =:: change the arc-shaped groove • to, in the lower arm of the front L-shaped bracket 41 Figure 3 4 and 5 can be reversed, and the free end 78 extends to the worm wheel m and is also fixed with a spring steel 75 to hold 'avoid the gyroscopic head 75 due to::' can be rotated between the head 24, so that it is separated early, The shadow is positive; = to the yoke 68 and the lower worm, the gyroscopic head is known, but in the small stud 72, the free end 78 of the spring wire 77 is bounced and the 14th page

1270503 V. Description of invention (11) ----- Continue to rotate. In the present embodiment, as shown in Fig. 7, the small tenon 72 is inserted at one end of a flat strip 79, and the other end of the flat strip 7 9 has a circular hole 7 9 a rotatably supported on the crucible. The wheel axle is 4 8 . Of course, the small studs 7 2 can also be mounted in other ways, such as in the arcuate recesses 73. ^ The tripod mechanism 80 is also shown in Figures 3-6. The stroke frame mechanism 8 includes a frame body 81. The lower end of the frame body 81 is provided with a support hole 82, which can be sleeved on the slide bar 9 fixed to the case & 14 for sliding left and right, and the upper end of the frame body 8 is provided - Inner wire 8 3 for ringing the thread of the wire 6 5 . A fork-shaped frame piece 8β is provided, and the sold end is rotatably mounted on a point 86 of the frame body 81. The fork frame piece & ^ • the upper end of the fork piece 8 7 is rounded at the hole 8 7a and the carrier The other end of the projectile 4 is connected to the other end of the 5 1 , and the lower end 88 of the fork has a downwardly-opening inclined H-side 88a which can be placed against the bottom wall 15 of the casing 4 A bracket 89 slides 11 to the left to oscillate the fork frame 85 counterclockwise about the fulcrum 86, thereby further stretching the stretcher 5 1 to enhance its tensile force to balance with the increased centrifugal force of the pontoon 3 2 . . As described above, since the rotational direction of each operation of the worm wheel 68 is reversed by about 丨/3 turns in the same direction as the one that has just been completed, the fulcrum of the frame 85 and the stroke frame 8丨The joint of 86 must be left with a small gap 85a to delay the movement of the fork frame when the travel frame is reversely moved to counteract the 1/3 turn of the multi-turn when the insect wheel is reversed, so that the tension spring 51 and the fork frame 85 The connection is stopped at the same position as the forward direction. A double fulcrum resilient member 90 (see FIG. 9) is also fixedly coupled to the lower end position of the stroke frame mechanism 80, and includes a bottom plate 91 disposed at the left and right fulcrums 9 2 a and 9 2 b adjacent to the bottom plate 91, ^ An inverted T-shaped sliding piece 93 placed on the fulcrum 9 2 a, 9 2 b, which can be placed around the two points ... and one of the left and right

Page 15 1270503

V. INSTRUCTION OF THE INVENTION (12) Moving, a tension spring 96 connected between the top end of the sliding piece 93 and 95, so that the lower end of the sliding is fixed above the point. At the top fulcrum q of the sliding piece 93, it is tight at the two pivot points 923 and 921 :) the connecting rod 5 (see Figs. 2 and 3) at the point of 94, which is moved by a pivotally connected machine to the left and right: After the passage is connected, the movement of the frame relative to the base member causes the chain C^; V^5 to position the movable member wheel of the rear dial 3. When the bicycle foot, the small rear sprocket or the larger rear chain, the key bar α moves, that is, the chain c stops moving, the frame mechanism shifts, and the speed changes to make the connection at the top end fulcrum 94 of the traveling piece The rod 5 is extended with 5V; the 96-Lagu extension makes the connection slide, that is, it automatically returns to the normal position and holds it until the pedal is turned again 98 mm. The mechanism is set at the lower side of the frame 81. The opening of the travel limiter 57 of the carrier mechanism 40 is between the highest speeds AZ. When the travel stand mechanism 80 is moved to the left to the corresponding /:, the small bearing 98 abuts and travels along the travel limit stop 57 to the left. The upper worm 21, knowing that the turret mechanism 8 is at the lowest speed position, the boring mechanism mechanism 8 〇 is moved to the right to the right meal corresponding to the time 'small ^ 98 abutting and along the travel limit piece 57 It can also be seen in m4, 6 and 8 that a stop elastic piece 99 is provided at a position close to the travel limit piece 57, and the stroke frame mechanism 80

Page 16 - V. Invention Description (13) The right side of the frame 8 1 is provided with a tab 8 ^ _ corresponding to the position of the lowest speed slot, / the lion moves to the right to the head 75 to the worm gear 68 The lower mast 24; the joint will be oscillated in a clockwise direction, so that the yoke "is separated from the tab of the ^1^ branch 41 ... against the limit element elastic sheet m. The frame w is shaped The bracket 41 cannot be moved in the counterclockwise direction of the double L rightward of the wheel frame mechanism 40. The swaying stroke mechanism 80 continues to turn to the high pitch to maintain the high speed broadcast, after the "driving": ί, or: = = : Line example:::Speed 檑? Stop below 2 early to illustrate the action process of the bicycle automatic shifter of the invention. The neck Λ bicycle stops walking, that is, when the rear wheel w stops rotating, the shift operation ^ cry you 4i 2 The gantry mechanism 80 is located at the rightmost position, and the rear derailleur 3 is guided: the first gear (the maximum rear sprocket) of the chain C is located at the gear shift Lt! I car starts: when walking, the rear wheel ¥Starting rotation 1 rotation causes the upper worm 21 and the lower worm 24 to move together by the input transmission mechanism 27 to the , 2, due to the lower rotation speed, the flying turret The flywheel 32 of the mechanism 3 is still in the rightmost position, and the rear dial 3 is operated in the most 曰, 1 ^ f ~ gear. As the pedal rotates, the rear wheel W starts to increase. 2 Rotating 'The upper and lower worms 21 and 24 are rotated at a higher rotational speed, the flying turret 32 is opened at a certain angle by the action of the two forces, and the sliding sleeve 3 3 is pulled to the right by the pulling wire 34, and the sliding sleeve pushes the gear to the right. The double l-shaped bracket 41 of the frame mechanism 4 is made clockwise 1270503. 5. Description of the invention (14)

Hi Di: The wheel 68 is sprinkled with the upper mast 21. Due to the relationship between the wheel 68 and the upper side, the insertion point (support shaft 43) of the second wheel 68 is in the oblique direction, so that the direction of rotation of the screw j21 pushes the wheel 68 to the pivot point without impact, etc. When the worm is touched, it will automatically engage tightly. When the transmission mechanism 60 is transmitted, the rotation of the upper worm 21 is rotated via the output direction. At this time, the completion 65 is in the clockwise direction as viewed from the left in FIG. 4 (normally, the internal thread 83 of the ablation mechanism 8〇 and the screw of the screw 65 of the screw 65 are combined to start moving to the left direction, Weeping recognition #—" Piece 90 shifts the rear derailleur 3 to the position closer to the ::::! position by connecting the rod 5. Since the groove is changed every time, the worm wheel 68 is rotated two ★ two: on The small studs 72 rotate the revolving lever 74 to the worm gear 68 and the upper worm τ, / commissing point 'to separate the two, due to the yoke frame mounted on the wide frame of the carrier mechanism 40 and the stroke frame mechanism 80 Stretching 之间 between 85 ΐ 轾 轾 轾 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 After the upper worm 2 1 is separated, it stays between the upper and lower masts 2丨, 24, and at this time, the rear chain 3 is also maintained at its corresponding shift stage position. Thus, with the rear wheel W Accelerating the rotation, the shift operating device 2 continues to automatically shift to a higher speed slot position. When the bicycle is decelerated, that is, the speed of the rear wheel w is decreased, The centrifugal force of the flying turret 32 becomes small, and at this time, the worm wheel 68 is engaged with the lower worm 24 by the pulling force of the tension spring 51 of the stroke frame mechanism 8, so that the stroke frame mechanism 8 is reversed from the above-described operation. 〇 Move to the right, correspondingly shift the rear chain mushroom 3 to the lower speed. At this time, the worm wheel 6 8 reverses in the counterclockwise direction.

Page 18 1270503 V. Description of the Invention (15) When rotating, the small stud 72 on the worm wheel 68 is displaced relative to the whip wheel 68 to the other end of the arcuate groove 73, and then starts to rotate with the worm wheel 68, therefore, the worm wheel shaft The revolving lever 7 4 on the 4 8 needs more than one revolution of the worm wheel to be brought to the meshing point of the worm wheel 68 and the lower worm 24 by the small stud 7 2 to separate the two, so as to offset the movable part in the reverse direction. The gap makes the shifting movement smooth. As can be seen from the above description, the bicycle automatic shifter of the present invention does not require the rider to continuously shift the gear by hand when it is used, and can automatically perform shifting according to the change of the vehicle speed, which is very convenient to use.

Page 19 1270503

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of the present invention connected to a bicycle frame; a car automatic shifter FIG. 2 is a shifting and shifting of the bicycle automatic shifter of the present invention. The connection diagram of the chain sprocket and the bicycle rear sprocket; the staying device, and the rear view 3 are the dreams of the shifting operation device of the bicycle shifter of the present invention; FIG. 4 is the bicycle automatic shifting of the present invention. FIG. 6 is a partial enlarged view of the shifting operation of the bicycle automatic shifter of the present invention; FIG. 6 is a partially enlarged schematic view of the flywheel clutch mechanism and the de-wheeling wheel of the bicycle automatic shifter of the present invention; Schematic diagram of the action of the frame mechanism; w Figure 7 is an exploded view of the small protrusion and the gyro on the worm wheel; Figure 8 is a partial enlarged view of the elastic piece of the limit element; Figure 9 is a schematic view of the action of the double fulcrum elastic member; A side view of a prior art rear derailleur coupled to a bicycle frame. The main components of the sub-assembly symbol description] frame F chain C sprocket G inner hub Η automatic shifter 1 bevel gear 4 shift operating device 2 connecting rod 5 wheel W rear derailleur 3 push rod 5 a 20th Page 1270503 Schematic description of bevel gear 11 Housing 14 Bottom wall 1 5 Right side wall 1 7 Middle wall 18 Slide bar 1 9 Left side wall 1 6 Upper worm 21 Pinion 2 2 Lower worm 24 Pinion 2 5 Middle Gear 26 input transmission mechanism 2 7 Fetuo clutch mechanism 30 Fetuo 3 2 Sliding sleeve 33 Pull wire 3 4 Carrier mechanism 40 L-shaped bracket 4 1 Pivot hole 4 2 Support shaft 4 3 Top plate 4 5 Lower arm 4 7 Worm gear shaft 48 spring 51 end 5 5 stroke limit piece 5 7 #出传动 mechanism 6 0 bevel gear 6 1 spur gear 62 bevel gear 6 4 lead screw 6 5 worm gear 6 8 spur gear 6 9 small stud 72 arc Groove 7 3 Rotating rod 7 4 Head 7 5 Spring wire 7 7 Free end 78 Flat strip 7 9 Stroke mechanism 80 Frame 81 Support hole 8 2 Internal thread 8 3 Fork bracket 8 5 Pivot 8 6 Upper end of fork 8 7 fork lower end 8 8 bracket 89 double pivot elastic part 9 0 bottom plate 9 1 fulcrum 9 2 sliding piece 9 3 lower end fixing point 9 5 tension spring 96 gin bearing 9 8 limit The elastic sheet 99

Page 21

Claims (1)

1270503 VI. Patent application scope 1 · A bicycle automatic shifter: a coaxial fixed wheel mounted on a bicycle rear wheel member; comprising: a rotating output on the inner hub and a rear chain mounted on the connection; a shifting operation housing; an upper worm Each has an input-passing worm, so that the two-one flying gyro is separated from the pair of flying turrets by the sliding sleeve of the worm, and the output of the yoke is transmitted to the shifting operation device on the bicycle frame of the sliding sleeve bicycle. And the turning device further includes a next worm left-handed helical tooth moving mechanism, which is a worm co-directional quick-closing mechanism, and the sliding direction generated when the system is slid; the mounting is parallel to the casing; the rotation of the output member According to the rotation speed of the upper worm, the centrifugal force acts, and the first and lower ends are sent to the upper side, and the other side is sleeved to the upper moving device. When the swinging is performed, the worm wheel can be driven. Selecting, so that a screw is smooth, the mechanism is driven; the mechanism is such that one end of the bracket abuts against the laterally slidable frame to swing around a support shaft; The worm wheel rim region is connected to the bracket to selectively rotate counterclockwise with the upper and lower masts; a frame body meshed with the screw rod, and when the bracket is combined, the left and right movement parts of the frame are rotated The bottom plate is fixedly moved, and the slave member is pivotally connected to the frame moving rod; the 俾 can pass, and the connecting rod can be connected Page 22 1270503 -------- VI. Application for patent scope The rear derailleur is connected for the purpose of shifting. 1中^私如/Please refer to the automatic bicycle changer described in item 1 of the patent scope. The system is composed of a bottom plate, a left side wall, a right side wall, a middle wall and a top plate integrated into the middle. The bicycle automatic changer according to the first aspect of the invention, wherein the upper worm is mounted at an upper end position of the housing and rotatably supported between the side wall and the right side wall, the left end thereof The portion has a left-handed helical tooth and the right end is a round rod; the lower worm is mounted at a lower end position of the housing and is rotatably supported between the left side wall and the middle wall, and has a left-handed helical tooth. The bicycle automatic shifter according to claim 1, wherein the rotary output member comprises a bevel gear, and the input transmission mechanism comprises a pinion gear respectively connected to the left end of the upper and lower worms, An intermediate gear between and coupled with the two pinions, and an umbrella gear fixedly coupled coaxially with the intermediate gear; the bevel gear can be associated with the bevel gear 4 fixedly mounted on the inner hub of the rear wheel of the bicycle . 5. The bicycle automatic shifter according to claim 1, wherein the pair of flying gyro is swingably mounted on the round rod at the right end of the upper worm, and the sliding sleeve is on the left side of the flying turret Sliding up and down, and two wires that are respectively connected to the two flying and sliding sleeves; when the flying turret is opened outward under the force of high-speed rotation, the cable pulls the sliding sleeve to the right. 6. The bicycle automatic shifter according to claim 1, wherein the bracket is an inverted double L-shaped frame body, and each of the corners is provided with a pivot hole, and the cymbal can be placed around the upper and lower sides. a support shaft swinging between the worm and the bottom wall and the top plate is provided with a worm wheel shaft mounting hole at the end of the lower arm of each L-shaped bracket. Page 23 1270503 Λ 、 申请 申请 申请 申请 、 、 、 、 、 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # . 7 of which is the right side of the bicycle automatic changer as described in the application for the special end of the squat/1 f; borrowing slip;;: the semi-circular end of the cymbal, which is placed against the axis of the sliding sleeve Pendulum swing: Right: Move the end so that the bracket can be moved around the support &#®座&# + ^, when the sleeve stops pushing the end, the bracket is under the action of the animal Swing counterclockwise. The automatic shifting device of the bicycle described in the first item of the 兮 Φ plus another I Gu Liganwei, each side has a left and right integrated travel limit piece, the opening inside the rain • red 7 · also needle side When the yangmu wood body moves to the left or right position below the side of the frame body of the stroke frame mechanism, the small bearing=the left or right oblique edge in the second and second cymbal slide contacts. tlMr 5 ^ has a tab on the right side of the body. There is a limit element elastic piece at the side position. When the position is in the position of the gear, the two cups of the rotating cup are moved to the lowest position by the right movement. That is, the worm wheel and the lower worm are separated. If the frame swings clockwise, so that it cannot be counterclockwise; convex = top sinner limit elastic piece, so that the bracket 10 stops the stroke frame mechanism and moves to the right as it moves forward. • When the bracket is supported by the support! ^ The automatic bicycle shifter described in item 1 and the high-speed rotation: the anion rod: when the tooth is clockwise, the low-speed rotation output of the worm gear direction; "connection, When the output transmission device generates a virtual worm wheel on the bracket, the outer peripheral surface of the top surface of the cymbal wheel is maintained between the upper position of the upper and lower worms and the top of the upper and lower worms. Page 24 1270503 The bicycle automatic changer described in the first paragraph of the patent scope, the side of the wheel is provided with a small convex, which can be displaced between the ends of the curved groove on the side of the worm wheel, and The f-rotating rod is rotatably mounted on the yoke axle, and the gyroscopic head is adjacent to the outer peripheral surface of the worm wheel, and is supported by a free end of the spring wire fixed to the bracket; the small protruding column can be used to drive back The head rotates to the merging point between the worm wheel and the upper and lower masts, so that the two Page 25 1270503 VI. Patent application scope Separator. The bicycle automatic shifter according to claim 1, wherein the small stud is inserted at one end of the strip, and the other end is rotatably supported on the yoke shaft. 1 . The automatic bicycle shifter according to claim 1, wherein the distance between the two ends of the circular arc groove is changeable to increase or decrease the reverse stroke to offset the gap of each movable part. The bicycle automatic shifter according to claim 1, wherein the frame body is swingably attached to a fork frame, and the upper end of the front fork is at the other end of the tension spring of the carrier mechanism. Connecting, and the lower end of the fork frame has a beveled edge that gradually diverges downwardly, and is in sliding contact with a bracket on the bottom wall of the housing, so that the fork frame swings up and down to adjust the stretching of the tension spring force. 1 . The bicycle automatic shifter according to claim 1 , wherein a small gap is left between the fork frame of the stroke frame mechanism and the frame body, and the fork is delayed when the travel frame mechanism moves in the reverse direction. The frame piece is used to offset the worm wheel from rotating about 1/3 turn in the reverse rotation, so that the connection point between the tension spring and the fork frame is stopped at the same position as when the turret is rotated. 1 . The bicycle automatic shifter according to claim 1, wherein the driven component is a double fulcrum elastic component fixedly connected to the frame of the stroke frame mechanism, the component having a bottom plate , disposed at two points on the left and right sides of the lower part of the bottom plate, a reverse T-shaped sliding piece which is placed on the fulcrum and swings around one of the two fulcrums, and a fulcrum connected to the top end of the sliding piece and the lower end of the bottom plate Tension spring between points, the top of the slide Page 26 1270503 Page 27 1270503 VI. Designated representative diagram (1) The representative representative diagram of the case is: ____3____ diagram (2), the symbol of the representative figure of the case is simple description: Double fulcrum elastic part 9 0 bottom plate 9 1 connecting rod 5 bottom wall 15 Slider 1 9 Pinion 2 2 Intermediate gear 26 Flygear 32 Carrier mechanism 40 Plate 4 5 Spring 51 Output drive mechanism 6 0 Worm gear 6 8 Stroke mechanism 80 Plunge 8 6 Pivot 9 2 b Stretch magazine 9 6 Umbrella Gear 11 right side wall 1 7 left side wall 1 6 lower mast 24 input transmission mechanism 2 7 sliding sleeve 33 L-shaped bracket 4 1 lower arm 47 end 5 5 bevel gear 64 spring wire 77 frame 81 bracket 89 slide 9 3 Limiting element elastic piece 9 9 Housing 14 Middle wall 1 8 Upper worm 2 1 Pinion 25 Flying gyro clutch mechanism 30 Pull wire 3 4 Pivot hole 4 2 娲 Axle 4 8 Stroke limit piece 5 7 Screw 6 5 free end 78 fork frame 8 5 fulcrum 9 2 a lower end fixed point 9 5